Saw



March 27, 1934. LAEMMEL 1,952,993

SAW

Filed April 23, 1932 amnion mamas/4145mm Patented Mar. 27,

SAW

Charles Albert Laemmel, Brooklyn, N. Y., assignor to Atlantic Service Company, Inc., Brooklyn,

N. Y., a. corporation of New York My invention relates t new and useful improvements in saws, and more particularly to butchers saws, hack saws, in fact to that general type of saw wherein a new blade may be quickly 5 and readily inserted in the frame and then put under tension.

One of the principal objects of the invention is to provide an improved form of what is often I I termed the toe-piece of the saw, that is, the 3 latch at the forward lower end of the saw frame to which the forward end of the saw blade is attached.

Another object of the invention, therefore, is to provide a toe-piece, a part of which may be quickly inserted in the usual hole at the forward end of the saw blade, after which the latch is swung down into position to tightly hold the forward end of the saw. All saws are provided with some form of toepiece but in most of the present arrangements, there is a possibility that the saw, rather than being placed in its desired position, will be placed say between the frame and the latch. Still another object of the invention is to pro- -vide a saw with an improved toe-piece, wherein the latch member is not only provided witha little bent arm or hook but is also provided with a shoulder which forms a lateral abutment for the saw blade, so that there is no possibility of the saw being aligned in any but its proper position.

With these and other objects in view, the invention consists in certain new and novel arrangements and combination of parts, as will be hereinafter more fully described and pointed out in the claims.

Referring now to the drawing showing a preferred embodiment,

Fig. 1 is a side elevation of a butchers saw showing my improved toe-piece at the forward end;

Fig. 2 is a fragmentary front view and showing the toe-piece in its latched position;

Fig. 3 is an enlarged fragmentary side elevaticn of the saw frame and toe-piece, the dotted lines showing the blade about to be swung into place;

Fig. 4 is a perspective of the latch member. Referring now more particularly to the several views, there is shown an ordinary frame 1 with the handle 2, the conventional heel locking member 3, the blade 4, and the forward end 5 of the frame with my improved toe-piece construction. Glancing for the moment at Fig. 2, there will -be seen the portion 5 of the frame while pivotally secured near the lower end there is the latch member 6. The extreme lower end of the portion 5 of the frame is bifurcated to form a slot, as at 7, for the reception of the forward end of the blade 4. There will also be noticed a cut-out porticn 8 in the lower end of the frame to receive a part of the latch member 6.

Referring now to the latch member 6, it will be seen that it consists of the shank 9 with the integral enlarged portion or shoulder 10 on its lower end together with the laterally projecting hook 11, which is bent substantially parallel with the shank, as at 12.

This shoulder 10 of the latch member fits within the cut-out portion 8 when the latch member 6 is swung downwardly from its pivot 13.

To insert the blade in the frame, the hook 11 is passed through a hole 14, which is present in the forward end of the blade 4, so that the side of the blade will abut and rest against the sur- 7 face 15 of the shoulder 10 of the latch member 6. The latch member 6 is then swung downwardly and the blade swung upwardly, so that a pin 16 in the same will engage the heel or cam 3, after which the cam is moved upwardly to thus put the tension on the blade 4.

The heel structure and the means of locking the saw in place at its rear end form no part of the present invention.

Now it will be seen that when the saw blade is placed over the little arm 11, it will be properly aligned in the slot 7 in the forward end of the frame 5, while the side of the saw will abut against the surface 15 of the shoulder 10 of the latch member, thus correctly positioning the saw at its forward end.

As heretofore mentioned, where a simple latch member is provided with a cross arm, there is a great possibility of the saw blade being set between say the inner face of the latch member and the adjacent side of the frame 5 rather than in the slot 7. With the present invention, however, the shoulder 10 being larger than the hole in the saw, the shoulder necessarily forms a stop for the saw blade and thus truly positions the saw blade in its proper place.

The shoulder 10 also abuts against one of the forward walls of the cut-out portion 8 and the hook 11 against the other, thus providing a rigid construction.

When necessary to remove the saw blade, the cam at the heel of the saw will be operated, the rear end of the saw blade dropped down, the latch member lifted, after which the blade may be disconnected in a moment from the latch member.

From the foregoing, it will be seen that I have provided a toe-piece for hack saws, butchers saws, and similar types of saws wherein the toepiece will not only properly hold the blade after the same is once placed in position but will also positively position the saw blade and prevent it from being jammed between the frame and the latch member during the inserting of the saw in the frame.

The little latch member 6 may be an integral casting or may be drop-forged, so that it may be manufactured cheaply, and it may also be quick- 1y riveted in place, thereby providing an inexpensive commercial construction.

Having thus described my invention, what I claim as new and desire to secure by Letters Patcut is:-

1. A saw consisting of a frame, means at the forward end of the frame for securing a blade, said means consisting of a pivotal latch member having an enlarged angularly extending shoulder near its lower end, a hook extending at right angles to the body of the latch member, the frame having a cut-out portion to receive the shoulder and hook of the latch member, the shoulder forming a stop for the inward pivotal movement of the latch member and also as a stop for the positioning of the saw blade on said hook and the hook extending downwardly to overlie the outer face of the frame adjacent the cut-out portion.

2. A butchers saw consisting of a frame, a toepieceat the forward end of the frame including a pivotal latch member having an enlarged rectangular shoulder at its lower end, the frame having a cut-out portion near its lower forward end, and the lower forward end of the frame also being bifurcated to receive a saw blade, a hook extending from said shoulder of the latch member adapted to be passed through a hole in the saw blade, the shoulder of the latch member partly extending within the cut-out portion of the frame and lying flush with the adjacent contacting wall of the frame, the inner front face of the shoulder also extending flush with the adjacent inner wall of the bifurcated arm of the frame to thereby define the position of the saw blade within the frame when the latch its swung to its closed position, and the hook extending downwardly along the outer face of the bifurcated part of the frame to thereby encompass the bifurcated walls of the frame between an inner face of the latch member and an inner face of the downwardly extending hook.

CHARLES ALBERT LAEMMEL. 

